A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5965-00-092-8841
NSN 6135-00-932-3136
NSN 6135-01-422-1440
NSN 5996-00-904-5193
NSN 6110-01-436-5678
NSN 6685-01-152-6003
NSN 6130-01-290-3310
NSN 5925-01-048-9216
NSN 6145-00-455-2809
NSN 5985-01-587-8504
NSN 6645-00-943-9063
NSN 6130-00-677-0827